CN112310176A - Display panel, display panel manufacturing method and display device - Google Patents
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/1201—Manufacture or treatment
Abstract
The embodiment of the application provides a display panel, a display panel manufacturing method and a display device, wherein the display panel comprises: the array substrate, the first electrode layer, the first pixel definition layer, the second pixel definition layer and the luminescent material. The first pixel defining layer has a thickness of 0.2 μm or less. The second pixel defining layer is disposed on the first face along a second direction and crosses the first pixel defining layer, the first direction intersecting the second direction. And the light-emitting material covers the first pixel defining layer between the two second pixel defining layers. The display panel adopts a Line Bank structure, improves the first pixel definition layer, reduces the thickness of the first pixel definition layer, improves the spreadability of luminescent materials in pixels with the same color, and improves the aperture opening ratio.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a display panel, a display panel manufacturing method, and a display device.
Background
The Line Bank structure is composed of a first pixel defining layer (Bank1) and a second pixel defining layer (Bank2) arranged in rows and columns. Wherein the first pixel defining layer and the second pixel defining layer have different thicknesses, and Bank2 is thicker than Bank 1. The first pixel defining layer and the second pixel defining layer are both organic materials, wherein Bank2 is a hydrophobic material, and Bank1 is a hydrophilic material. In order to ensure the ink spreadability and fluidity during printing with the same color, the thickness of Bank1 is preferably 0.3um or less. However, the Bank1 coating (Coater) process for organic materials is not satisfactory, and requires a high Coater thickness, such as 1 μm, followed by thinning (Dry/ash thinning in general), but the level of thinning is limited to ensure uniformity. At present, the thickness of the bank1 is more than 0.4 μm, which causes poor mobility of ink climbing and finally has deviation of ink capacity in the same color pixel. In addition, Bank1 is formed with a wide width using an organic material, which also has an effect on the aperture ratio.
Disclosure of Invention
The embodiment of the application provides a display panel, a display panel manufacturing method and a display device, which can improve the spreadability of ink in pixels with the same color and improve the aperture opening ratio.
The application provides a display panel, including:
the array substrate comprises a first surface and a second surface which are oppositely arranged;
a plurality of first electrode layers arranged on the first surface, and a space is formed between the first electrode layers and the first electrode layers;
a first pixel defining layer disposed on the first face in a first direction and within the gap, an end portion of the first pixel defining layer extending to a side of the first electrode layer away from the first face, the first pixel defining layer having a thickness of 0.2 μm or less;
a second pixel defining layer disposed on the first face along a second direction and crossing the first pixel defining layer, the first direction intersecting the second direction;
the light-emitting material is arranged on one side, far away from the first face, of the first electrode layer; and the luminous materials of the same color are arranged between two adjacent second pixel defining layers, and the luminous materials cover the first pixel defining layer between the two second pixel defining layers.
In some embodiments, a horizontal length of the first pixel defining layer extending to the first electrode layer is 2 μm or less.
In some embodiments, the first pixel defining layer includes a first portion and a second portion, a portion of the first pixel defining layer extending to the first electrode layer is the first portion, a portion of the first pixel defining layer disposed within the space is the second portion, and a height of the first portion is greater than a height of the second portion.
In some embodiments, the display device further comprises a second electrode layer disposed on a side of the first pixel defining layer, the second pixel defining layer, and the light emitting material away from the first face.
In some embodiments, a height of the second electrode layer on a surface of the light emitting material is higher than a height of the second electrode layer on the first pixel defining layer and lower than a height of the second electrode layer on the second pixel defining layer.
In some embodiments, the first pixel defining layer is made of an inorganic material, and the second pixel defining layer is made of an organic hydrophobic material.
In some embodiments, the first pixel definition layer has a thickness less than a thickness of the second pixel definition layer.
The application provides a display panel manufacturing method, which comprises the following steps:
providing an array substrate, wherein the array substrate comprises a first surface and a second surface which are oppositely arranged;
arranging a plurality of first electrode layers on the first surface, wherein a gap is formed between each first electrode layer and the corresponding first electrode layer;
arranging a first pixel defining layer along a first direction on the first face, the first pixel defining layer being arranged in the gap, and an end portion of the first pixel defining layer extending to a side of the first electrode layer away from the first face, the first pixel defining layer having a thickness of 0.2 μm or less;
disposing a second pixel defining layer on the first face along a second direction, the second pixel defining layer crossing the first pixel defining layer, the first direction intersecting the second direction;
arranging a luminescent material on one side of the first electrode layer, which is far away from the first surface; and the luminous materials of the same color are arranged between two adjacent second pixel defining layers, and the luminous materials cover the first pixel defining layer between the two second pixel defining layers.
In some embodiments, the disposing a first pixel defining layer on the first face along a first direction, the first pixel defining layer extending to a side of the first electrode layer away from the first face, includes:
arranging a first pixel definition layer film on the first surface by adopting a deposition method;
patterning the first pixel definition layer film to obtain a first pixel definition layer film arranged along a first direction;
and drying the first pixel definition layer film to obtain the first pixel definition layer.
The application provides a display device, including the above display panel.
The display panel provided by the embodiment of the application comprises an array substrate, a first electrode layer, a first pixel definition layer, a second pixel definition layer and a light-emitting material. The array substrate comprises a first surface and a second surface which are oppositely arranged. The first electrode layer is arranged on the first surface, the first electrode layers are arranged in a plurality of the first surfaces, and an interval is formed between each first electrode layer and the corresponding first electrode layer. The first pixel definition layer is arranged on the first surface along the first direction and in the interval, the end part of the first pixel definition layer extends to one side of the first electrode layer far away from the first surface, and the thickness of the first pixel definition layer is less than 0.2 mu m. The second pixel defining layer is disposed on the first face along a second direction and crosses the first pixel defining layer, the first direction intersecting the second direction. The light-emitting material is arranged on one side of the first electrode layer far away from the first surface; and the light-emitting material covers the first pixel defining layer between the two second pixel defining layers. The display panel provided by the embodiment of the application adopts a Line Bank structure, improves the first pixel definition layer, reduces the thickness of the first pixel definition layer, improves the spreadability of the luminescent material in the same color pixel area, and improves the aperture opening ratio.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic top view of a structure provided in an embodiment of the present application;
FIG. 2 is a schematic view of a first film layer structure provided in an embodiment of the present disclosure;
FIG. 3 is a schematic view of a second film layer structure provided in the embodiments of the present application;
FIG. 4 is a schematic view of a third film structure provided in the embodiments of the present disclosure;
FIG. 5 is a flow chart of a display panel manufacturing process according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a display device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that in the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present application.
The embodiments of the present application provide a display panel, a method for manufacturing the display panel, and a display device, and the display panel is described in detail below.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic top view structure diagram of a display panel 10 in an embodiment of the present application, the display panel 10 employs a Line Bank structure, and each pixel is separated by a first pixel definition layer 103 arranged along a first direction and a second pixel definition layer 104 arranged along a second direction, where the first direction and the second direction intersect. The second pixel defining layer 104 separates the light emitting materials 105 of different colors. Wherein the luminescent material 105 comprises a red luminescent material 105a, a blue luminescent material 105b and a green luminescent material 105 c. The arrangement order of the red light emitting material 105a, the blue light emitting material 105b and the green light emitting material 105c in fig. 1 is only illustrative and not intended to limit the present application. The arrangement of the red, blue and green emitting materials 105a, 105b and 105c in the Line Bank structure is well known to those skilled in the art and will not be described herein.
Fig. 2 is a schematic diagram of a first film layer structure of the display panel 10 in the embodiment of the present application. Fig. 2 is a schematic diagram of a film structure of the display panel 10, and does not refer to a cross-sectional diagram of fig. 1, and only shows a film relationship among the array substrate 101, the first electrode layer 102, the first pixel defining layer 103, the second pixel defining layer 104, and the light emitting material 105.
The display panel 10 includes an array substrate 101, a first electrode layer 102, a first pixel definition layer 103, a second pixel definition layer 104, and a light emitting material 105. The array substrate 101 includes a first surface 101a and a second surface 101b disposed opposite to each other. The first electrode layer 102 is disposed on the first surface 101a, and a plurality of first electrode layers 102 are disposed, and a space is provided between the first electrode layer 102 and the first electrode layer 102. The first pixel defining layer 103 is disposed on the first surface 101a along the first direction and within the gap, an end portion of the first pixel defining layer 103 extends to a side of the first electrode layer 102 away from the first surface 101a, and a thickness of the first pixel defining layer 103 is 0.2 μm or less. The second pixel defining layer 104 is disposed on the first face 101a along a second direction, and crosses the first pixel defining layer 103, the first direction intersecting the second direction. The light-emitting material 105 is provided on the side of the first electrode layer 102 away from the first face 101 a; wherein, the light emitting material 105 with the same color is disposed between two adjacent second pixel defining layers 104, and the light emitting material 105 covers the first pixel defining layer 103 between the two second pixel defining layers 104.
The display panel provided by the embodiment of the application adopts a Line Bank structure, improves the first pixel definition layer 103, reduces the thickness of the first pixel definition layer 103, improves the spreadability of the luminescent material 105 in the same color pixel region, and improves the aperture opening ratio.
In fig. 1, the direction extending along the x axis is a first direction, and the direction extending along the y axis is a second direction. The first direction and the second direction are perpendicular to each other in fig. 1 as an example, and are not intended to limit the arrangement direction of the first pixel defining layer 103 and the second pixel defining layer 104 provided in the present application.
The first surface 101a may be an upper surface of the array substrate 101, and the second surface 101b may be a lower surface of the array substrate 101. Of course, the first surface 101a may be a lower surface of the array substrate 101, and the second surface 101b may be an upper surface of the array substrate 101. In the embodiment of the present invention, without specific description, the first surface 101a is the upper surface of the array substrate 101, and the second surface 101b is the lower surface of the array substrate 101.
The array substrate 101 is a Thin Film Transistor (TFT) substrate. The TFT is any one of a Low Temperature Polysilicon (LTPS) TFT, an Oxide (Oxide) TFT, or a Solid Phase Crystallization (SPC) TFT.
Wherein the thickness of the first pixel defining layer 103 is 0.05 μm, 0.07 μm, 0.1 μm, 0.12 μm, 0.15 μm, 0.17 μm, or 0.2 μm.
The first pixel defining layer 103 is made of an inorganic material, and the second pixel defining layer 104 is made of an organic hydrophobic material. Specifically, the second pixel defining layer 104 may employ silicone, organic fluorine, polyolefin, polycarbonate, polyamide, or polyacrylonitrile. The inorganic material process can improve the thickness of the first pixel defining layer 103 and increase the thinning level. After the thickness of the first pixel defining layer 103 is reduced, the climbing mobility of the light emitting material 105 can be improved. In addition, when the first pixel defining layer 103 is made of an organic material, its horizontal length (tape distance) is long, and thus, the influence on the aperture ratio is large. Therefore, the first pixel defining layer 103 is made of an inorganic material, so that the horizontal length of the first pixel defining layer 103 is reduced while the thickness of the first pixel defining layer 103 is reduced. In addition, the climbing fluidity of the luminescent material 105 ink can also be improved. The second pixel definition layer 104 is mainly used for separating the light emitting materials 105 with different colors, so that the organic hydrophobic material is adopted to prevent the light emitting materials 105 from mixing colors to influence the display effect. Specifically, the first pixel defining layer 103 employs any one of silicon oxide, silicon nitride, or silicon oxynitride or a combination of a plurality of these. The thickness of the first pixel defining layer 103 is ensured to be 0.2 μm or less.
Wherein, the horizontal length of the first pixel defining layer 103 extending to the first electrode layer 102 is less than or equal to 2 μm. Specifically, the horizontal length of the first pixel defining layer 103 extending to the first electrode layer 102 is 1 μm, 1.2 μm, 1.5 μm, 1.7 μm, or 2 μm. Since the first pixel definition layer 103 needs to be thinned after the patterning process, the thinning process needs to consider errors of film thickness and length, and needs to reserve a process margin (margin), in the related art, the first pixel definition layer 103 is made of an organic material, and the margin of the thinning process needs to be reserved by more than 3 μm. In the present application, the first pixel defining layer 103 is made of an inorganic material, and the margin of the inorganic material can be reduced to less than 2 μm. Accordingly, the horizontal length (tap distance) of the first pixel definition layer 103 may be reduced, thereby improving the aperture ratio of the display panel 10.
Wherein the thickness of the first pixel defining layer 103 is smaller than that of the second pixel defining layer 104. Reducing the thickness of the first pixel defining layer 103 can improve the climbing fluidity of the light emitting material 105 during printing, so that the light emitting material 105 of the same color can be better attached to the first pixel defining layer 103. The thickness of the second pixel defining layer 104 needs to be set thicker to better separate the light emitting materials 105 with different colors, so as to prevent the light emitting materials 105 from mixing colors and affecting the display effect of the display panel 10.
Referring to fig. 3, fig. 3 is a schematic diagram of a second film layer structure of the display panel 10 according to the embodiment of the present disclosure. The first pixel defining layer 103 includes a first portion 103a and a second portion 103b, a portion of the first pixel defining layer 103 extending to the first electrode layer 102 is the first portion 103a, a portion of the first pixel defining layer 103 disposed in the space is the second portion 103b, and a height of the first portion 103a is greater than a height of the second portion 103 b. This is because the first pixel defining layer 103 is made of an inorganic material, and thus a thinner thinning effect can be obtained in the thinning process, resulting in a recessed shape. On the other hand, the thickness of the first pixel defining layer 103 can be kept relatively uniform at 0.2 μm or less. On the other hand, the light-emitting materials 105 of the same color can be better attached to the first pixel defining layer 103, so that the spreading performance of the light-emitting materials 105 in the ink-jet printing process is improved, and the thickness of the light-emitting materials 105 in the pixels of the same color is uniform.
It should be noted that the first pixel defining layer 103 is an integral structure, and the first portion 103a and the second portion 103b are illustrated in fig. 3 to illustrate that the first pixel defining layer 103 has different heights at different positions, so that the shape of the first pixel defining layer is slightly recessed within the space, instead of indicating that the first pixel defining layer 103 is composed of two parts.
Referring to fig. 4, fig. 4 is a schematic view illustrating a third film structure of the display panel 10 according to the embodiment of the present disclosure. The display panel 10 further includes a second electrode layer 106, and the second electrode layer 106 is disposed on a side of the first pixel defining layer 103, the second pixel defining layer 104, and the light emitting material 105 away from the first face 101 a.
The height of the second electrode layer 106 on the surface of the light emitting material 105 is higher than the height of the second electrode layer 106 on the first pixel defining layer 103 and lower than the height of the second electrode layer 106 on the second pixel defining layer 104. This is because the second electrode layer 106 is a full-surface process, and has a uniform thickness throughout the first pixel defining layer 103, the second pixel defining layer 104, and the light emitting material 105.
The display panel 10 provided by the embodiment of the application adopts a Line Bank structure, and the pixel definition layer structure can improve the printing precision fault tolerance rate under the printing operation time (tact time) and high resolution. The present application improves the first pixel defining layer 103, and the first pixel defining layer is made of an inorganic material, so that the thickness of the first pixel defining layer 103 is reduced, and the thickness of the first pixel defining layer 103 is reduced to be less than 0.2 μm. Thereby improving the spreadability of the light emitting material 105 in the same color pixel region and increasing the aperture ratio.
The present invention provides a method for manufacturing a display panel, which is described in detail below. Referring to fig. 5, fig. 5 is a schematic flow chart illustrating a display panel manufacturing method according to an embodiment of the present disclosure. The display panel manufacturing method provided by the embodiment of the application specifically comprises the following steps:
201. an array substrate is provided, and the array substrate comprises a first surface and a second surface which are oppositely arranged.
202. The first surface is provided with a plurality of first electrode layers, and a gap is formed between each first electrode layer and the corresponding first electrode layer.
203. And arranging a first pixel defining layer along the first direction on the first surface, wherein the first pixel defining layer is arranged in the interval, the end part of the first pixel defining layer extends to the side of the first electrode layer far away from the first surface, and the thickness of the first pixel defining layer is less than 0.2 μm.
Wherein, a first pixel definition layer film is arranged on the first surface by adopting a deposition method. And then patterning the first pixel definition layer film to obtain a first pixel definition layer film arranged along a first direction. And drying the first pixel definition layer film to obtain the first pixel definition layer.
The deposition method can be physical vapor deposition, chemical vapor deposition or plasma chemical vapor deposition. The patterning process may be performed by photolithography. Specifically, under the action of plasma or an electric field, the first pixel defining layer material is bombarded, molecules, atoms, ions, electrons and the like of the first pixel defining layer material are sputtered, and the sputtered first pixel defining layer material has certain kinetic energy and is emitted to the first surface along a certain direction, so that a first pixel defining layer thin film is formed on the first surface. And then coating photoresist on the first pixel definition layer film, sequentially carrying out prebaking and patterned exposure on the photoresist, and developing to obtain a patterned first pixel definition layer film, so that the first pixel definition layer film is arranged in the interval along the first direction. And finally, drying the first pixel definition layer film to obtain the first pixel definition layer.
According to the setting method of the first pixel definition layer, the first pixel definition layer is directly obtained through a deposition method, and thinning is not required to be performed after high thickness is coated under the limitation of a process technology. On one hand, the manufacturing process of the first pixel definition layer is simplified, and the production efficiency can be improved. On the other hand, the first pixel defining layer is thinned, and the climbing spreadability of the luminescent material is improved.
204. A second pixel defining layer is disposed on the first face along a second direction, the second pixel defining layer crossing the first pixel defining layer, the first direction intersecting the second direction.
205. Arranging a luminescent material on one side of the first electrode layer, which is far away from the first surface; and the light-emitting material covers the first pixel defining layer between the two second pixel defining layers.
And arranging the luminescent material on the side of the first electrode layer far away from the first surface by adopting an ink-jet printing method. Specifically, a luminescent material ink is inkjet-printed on the first surface, then the luminescent material ink is subjected to planarization treatment and drying, and then the luminescent material ink is baked to obtain a luminescent material. The ink jet printing method can accurately control the film forming area, save materials, reduce the cost and improve the yield of products.
After the light-emitting material is arranged on the side, far away from the first surface, of the first electrode layer, a second electrode layer is arranged on the first pixel defining layer, the second pixel defining layer and the side, far away from the first surface, of the light-emitting material by adopting an evaporation method. The evaporation method is simple in film forming method, high in film layer film purity and compactness, controllable in thickness and easy to obtain the low-resistance second electrode layer.
In the display panel manufacturing method provided by the embodiment of the application, an inorganic manufacturing process is adopted in the manufacturing process of the first pixel defining layer, so that the thickness of the first pixel defining layer can be reduced. In the related art, the first pixel defining layer is made of an organic material, but in order to ensure that critical dimensions such as line width and line distance of the organic first pixel defining layer can meet production requirements and ensure uniformity and stability of the thickness of the organic first pixel defining layer, the thickness of the first pixel defining layer is still thick, and the ink has poor creep property. The first pixel definition layer in the application is made of inorganic materials, so the first pixel definition layer can be manufactured by adopting a deposition method, the deposition method is high in speed, the film layer is compact, the adhesion is good, and the first pixel definition layer is very suitable for large-batch and high-efficiency industrial production. The thickness of the first pixel defining layer can be effectively reduced, and the horizontal length of the first pixel defining layer can be reduced, thereby improving the aperture ratio. In addition, the luminous material adopts an ink jet printing method, the spreading effect of the luminous material can be improved by reducing the thickness of the first pixel definition layer, and the spreading uniformity of the luminous material among pixels is improved.
A display device 100 is provided, and fig. 6 is a schematic structural diagram of the display device 100 in the embodiment of the present application. The display device 100 includes the display panel 10 and the encapsulation layer 20, and the display device 100 may further include other devices. The encapsulation layer 20 and other devices and their assembly in the embodiments of the present application are well known to those skilled in the art and will not be described in detail herein.
The display device 100 provided by the embodiment of the application includes a display panel 10 and an encapsulation layer 20. The display panel 10 uses an inorganic material to form the first pixel defining layer, and reduces the thickness of the first pixel defining layer to 0.2 μm or less. The spreading effect of the luminescent material is improved, the spreading uniformity of the luminescent material among pixels is improved, and the display effect of the display device is improved. In addition, in the application, the horizontal length of the first pixel defining layer is reduced, which is beneficial to improving the aperture opening ratio of the display device.
The display panel, the display panel manufacturing method and the display device provided by the embodiments of the present application are described in detail, and the principles and embodiments of the present application are described herein by using specific examples, which are only used to help understand the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A display panel, comprising:
the array substrate comprises a first surface and a second surface which are oppositely arranged;
a plurality of first electrode layers arranged on the first surface, and a space is formed between the first electrode layers and the first electrode layers;
a first pixel defining layer disposed on the first face in a first direction and within the gap, an end portion of the first pixel defining layer extending to a side of the first electrode layer away from the first face, the first pixel defining layer having a thickness of 0.2 μm or less;
a second pixel defining layer disposed on the first face along a second direction and crossing the first pixel defining layer, the first direction intersecting the second direction;
the light-emitting material is arranged on one side, far away from the first face, of the first electrode layer; and the luminous materials of the same color are arranged between two adjacent second pixel defining layers, and the luminous materials cover the first pixel defining layer between the two second pixel defining layers.
2. The display panel according to claim 1, wherein a horizontal length of the first pixel defining layer extending to the first electrode layer is 2 μm or less.
3. The display panel according to claim 1, wherein the first pixel definition layer includes a first portion and a second portion, a portion of the first pixel definition layer extending to the first electrode layer is the first portion, a portion of the first pixel definition layer disposed in the space is the second portion, and a height of the first portion is larger than a height of the second portion.
4. The display panel according to claim 1, further comprising a second electrode layer provided on a side of the first pixel defining layer, the second pixel defining layer, and the light-emitting material away from the first surface.
5. The display panel according to claim 3, wherein a height of the second electrode layer on a surface of the light-emitting material is higher than a height of the second electrode layer on the first pixel defining layer and lower than the height of the second electrode layer on the second pixel defining layer.
6. The display panel according to claim 1, wherein the first pixel defining layer is made of an inorganic material, and the second pixel defining layer is made of an organic hydrophobic material.
7. The display panel of claim 1, wherein the first pixel defining layer has a thickness less than a thickness of the second pixel defining layer.
8. A method for manufacturing a display panel includes:
providing an array substrate, wherein the array substrate comprises a first surface and a second surface which are oppositely arranged;
arranging a plurality of first electrode layers on the first surface, wherein a gap is formed between each first electrode layer and the corresponding first electrode layer;
arranging a first pixel defining layer along a first direction on the first face, the first pixel defining layer being arranged in the gap, and an end portion of the first pixel defining layer extending to a side of the first electrode layer away from the first face, the first pixel defining layer having a thickness of 0.2 μm or less;
disposing a second pixel defining layer on the first face along a second direction, the second pixel defining layer crossing the first pixel defining layer, the first direction intersecting the second direction;
arranging a luminescent material on one side of the first electrode layer, which is far away from the first surface; and the luminous materials of the same color are arranged between two adjacent second pixel defining layers, and the luminous materials cover the first pixel defining layer between the two second pixel defining layers.
9. The display panel manufacturing method of claim 8, wherein the disposing a first pixel defining layer on the first surface along a first direction, the first pixel defining layer extending to a side of the first electrode layer away from the first surface, comprises:
arranging a first pixel definition layer film on the first surface by adopting a deposition method;
patterning the first pixel definition layer film to obtain a first pixel definition layer film arranged along a first direction;
and drying the first pixel definition layer film to obtain the first pixel definition layer.
10. A display device comprising a display panel according to any one of claims 1 to 7.
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